Crash when changing track

[Aritz]

I am getting crashes all the times I change track when I am creating a offline or online server. Example:

I am driving in Goldenport in my own server, then I want to go to Amay: ADMIN-> change track-> Start -> Select kart paint -> CRASH

If I close the server but not the game, the same when "Start" is pressed after the kart paint choose.

No matters if the choosen track is official or unofficial.